Medical abbreviations : ' O '

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z 

Abbreviation	Interpretation
OB	obstetrics
OCG	oral cholecystogram
OD	overdose or right eye
OM	otitis media
OOB	out of bed
OOP	out of plaster
OPV	oral polio vaccine
OR	operating room
OS	left eye
OU	both eyes